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WORM_FLASHY.VRX
Malware type: Worm
Destructive: No
Platform: Windows 2000, Windows XP, Windows Server 2003
Encrypted: Yes
In the wild: Yes

Overview


Trend Micro has received multiple samples of this malware from several, independent sources, including customer reports and internal sources. These indicate that this worm poses a high risk to users due to the increased possibility of infection.

To get a one-glance comprehensive view of the behavior of this Worm, refer to the Threat Diagram shown below.

This is the Trend Micro detection for infected copies of WORM_FLASHY.AA. This kind of infection occurs when a malware resides with file infectors on the same infected system. In this case, PE_CHIR.B and PE_VIRUX.AA are also found on infected systems with WORM_FLASHY.AA. As such, the routines of the said worm, PE_CHIR.B, and PE_VIRUX.AA are all exhibited in the affected system.

This worm may be downloaded by other malware/grayware/spyware from remote sites. It may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.

Technical Details


File size: 128,757 bytes
File type: PE
Memory resident: Yes
Initial samples received date: 31 Jan 2011

Arrival Details

This worm may be downloaded by other malware/grayware/spyware from remote sites.

It may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

NOTES:
This is the Trend Micro detection for infected copies of WORM_FLASHY.AA. This kind of infection occurs when a malware resides with file infectors on the same infected system. In this case, PE_CHIR.B and PE_VIRUX.AA are also found on infected systems with WORM_FLASHY.AA. As such, the routines of the said worm, PE_CHIR.B, and PE_VIRUX.AA are all exhibited in the affected system.

Solution


Minimum scan engine: 8.900
First VSAPI Pattern File: 7.850.05
First VSAPI Pattern Release Date: 20 Feb 2011
VSAPI OPR Pattern Version: 7.851.00
VSAPI OPR Pattern Release Date: 21 Feb 2011

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Remove malware files dropped/downloaded by WORM_FLASHY.VRX

Step 3

Identify and terminate files detected as WORM_FLASHY.VRX

[ Learn more ]
  1. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  2. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Scan your computer with your Trend Micro product to delete files detected as WORM_FLASHY.VRX. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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Analysis By: Karl Dominguez

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